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From: Wei Yongjun <weiyongjun1@huawei.com>
To: Hulk Robot <hulkci@huawei.com>, Jens Axboe <axboe@kernel.dk>,
	"Lauri Kasanen" <cand@gmx.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>, <linux-block@vger.kernel.org>
Subject: [PATCH -next] n64: fix return value check in n64cart_probe()
Date: Tue, 23 Feb 2021 14:01:04 +0000	[thread overview]
Message-ID: <20210223140104.1743541-1-weiyongjun1@huawei.com> (raw)

In case of error, the function devm_platform_ioremap_resource()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().

Fixes: d9b2a2bbbb4d ("block: Add n64 cart driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/block/n64cart.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/block/n64cart.c b/drivers/block/n64cart.c
index 47bdf324e962..84a0f8d0be29 100644
--- a/drivers/block/n64cart.c
+++ b/drivers/block/n64cart.c
@@ -129,8 +129,8 @@ static int __init n64cart_probe(struct platform_device *pdev)
 	}
 
 	reg_base = devm_platform_ioremap_resource(pdev, 0);
-	if (!reg_base)
-		return -EINVAL;
+	if (IS_ERR(reg_base))
+		return ERR_PTR(reg_base);
 
 	disk = alloc_disk(0);
 	if (!disk)


             reply	other threads:[~2021-02-23 13:53 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-23 14:01 Wei Yongjun [this message]
2021-02-23 14:56 ` [PATCH -next] n64: fix return value check in n64cart_probe() Lauri Kasanen
2021-02-23 19:32 ` Chaitanya Kulkarni

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